Hoisting-machine



C. UHL.

HOISTING MACHINE.

APPLICATION min SEPT. 1. 1918.

1,382,576, PatentedJune 21, 1921.

INVENTOR 45 provided at the opposite ends thereof with ville,

' ed upon a Wheeled motor truck. i

chines, the object in view being .adapted for well driving work, for and lowering well casings,

in Fig. 2 is an end sprocket gear 4 from which a 1 UNITED STATES PATENT oi-"rlce.

CLYDE UHL, OF BABTLESVILLE, OKLAHOMA.

HOISTING-MAGHINE.

To all whom it may concern:

Be it known that I, CLYDE UHL, a citizen of the United States, residing at Bartlesin the county of Washington and State of Oklahoma, have invented new and useful Improvements in Hoisting-Machines, of which the following is a specification.

This invention relates to hoisting mato produce ecially oisting tubes and rods. While the apparatus hereinafter described is particularly adapted for the purpose referred to, it will become apparent as the description proceeds that the improved hoist ing machine may be used for various other urposes which will suggest themselves.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings:

Figure 1 is a top plan view of the hoistmachine.

a hoisting machine which is es view of the same. Fig. 3 is' a dia ammatic reduced side elevation showing t eholsting machine moun Referring to the drawings, the frame offa motor truck, lthe engine thereof, 2lthe driving shaft of the truck, and 3 the driving shaft of the hoistin mechanism, said' shaft having 'fa'st t ereon a chain 5 extends around a smaller sprocket gear 6 on the driyingshaft 2 of the truck.

The shaft 3 is mounted adjacent to its opposite ends in suitable bearing members secured b fastening means '8 'to the plat-- formor ody 1. of the truck. 'Normally loose upon the. shaft 3 is a main drum 10, roller bearings 11 being interposed between said drum and the shaft 3 so as to reduce friction to a minimum. The drum 10 is brakedrums 12 in conjunction with which are used brake bands 13, each of which is 18 desi nates a sliding clutch on Mounte mbearings 19 in parallel relation to theshaft 3 is a countershaft' 20 hav- 1 designates Specification of Letters Patent. Patented June 21, 1921. I

Application filed September 7, 1918. Serial No.'2 58,053.

,ing fast thereo n a sprocket gear 21 from ggapted to .be engaged by a clutch member eathered to and slidable on the shaft 3. The shaft 3'has fast thereon a sprocket gear 26. From the sprocket gear 26 a chain 27 extends around another sprocket gear on the shaft or driving element 2 of the truck, Fig. 3. Either the .chain 5 or the chain 27 may be employed to drive the shaft 3; the chain 27 being employed when the rear truck wheel is raised clear of the ground. Fast on the counter shaft'20 is a bevel faced friction gear 28 movable into and out of drivin engagement with a correspondingly shaped friction wheel 29 on the main drum 10." An end thrust device 20? is used to shift the shaft 20 and to press the gear 28 against the gear 29. The mechanism just described provides for reversing the direction of rotation'of the maln drum 10 to give the neceson, tion with the work platform in driving wells. It will be observed that the main dr'u'm 10 may thus be driven in'either direction as the nature of the work requires.

that the shaft 3 is driven from the shaft 2, and the rear wheels are driven, in turn, from the shaft 3 through sprocket 26.

I claim-:-

In a hoistin apparatus, a wheeled truck having a plat orm and also having a driving element, a hoisting organization mounted on the said platform and including a main drive shaft, a drum loose on said shaft, a driving 'connection intermediate the said driving element of the truck and the shaft, a driving connection intermediate of one of the ground wheels of the truck and said shaft, a,clutch to connect the drum directly to the shaft, a bevel-face friction ear fixed to the drum, a counter shaft, a evel-face" friction gear fixed on the counter shaft and contacting with the first-namedbevel-face friction gear, a clutch member loose on the first-named shaft and connected with the counter shaft, and a clutch member feathered on the first-named shaft and movloose clutch member.

In testimony whereofI afiix my signature.v

CLYDEUHL,

sary slack in the hoistor cable wound therethis being especially useful in connec- I It will be apparent from'the foregoing 

